On Mon, 02 Dec 2019 08:31:02 +0000, Miod Vallat wrote:

> grep(1), when invoked with the -R option but no path, displays a
> "recursive search of stdin" warning and acts as if -R had not been
> specified.
> GNU grep, in that case, will perform a recursive search in the current
> directory, i.e. uses an implicit "." path if none is given.

Our behavior was based on what GNU grep originally did.  However,
GNU grep has moved on and so should we.

> This is IMO a much better behaviour. What about the following diff?

OK millert@

 - todd

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